iio: cdc: ad7746: Add device specific ABI documentation.
The datasheet description of offset calibration is complex, so for that on just refer the reader to the device datasheet. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20220626122938.582107-16-jic23@kernel.org
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What: /sys/.../iio:deviceX/in_capacitableY_calibbias_calibration
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What: /sys/.../iio:deviceX/in_capacitableY_calibscale_calibration
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KernelVersion: 6.1
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Contact: linux-iio@vger.kernel.org
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Description:
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Write 1 to trigger a calibration of the calibbias or
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calibscale. For calibscale, a full scale capacitance should
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be connected to the capacitance input and a
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calibscale_calibration then started. For calibbias see
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the device datasheet section on "capacitive system offset
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calibration".
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